1. Division of Life Science and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;
2. School of Life Sciences and Center for Life Sciences, Tsinghua University, Beijing 100084, China;
3. Department of Bioengineering, University of California, Berkeley, California 94720;
4. Biodynamic Optical Imaging Center (BIOPIC), Beijing Advanced Innovation Center for Genomics (ICG), College of Engineering, and Center for Life Sciences, Peking University, Beijing 100871, China;